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lutetium (Lu)


lutetium
Lutetium.
Image copyright: smart-elements.com
A metallic element of the lanthanide series, first isolated by G. Urbain in Paris in 1906 (and independently by C. James in New Hampshire), together with ytterbium; its name comes from Lutetia, the Latin word for Paris. Its chief ore is monazite. The element is used as a catalyst, but has no other commercial uses. Its most common isotope is 175Lu (97.41%).


atomic number 71
relative atomic mass 174.97
relative density 9.842
melting point 1,656°C (3,013°F)
boiling point 3,315°C (5,999°F)


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